Home / 22,241.25-30,698.39-12,815.28

Finding the Fourth Proportional to 22,241.25, 30,698.39 and 12,815.28

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Solution

The fourth proportional to 22,241.25, 30,698.39 and 12,815.28 is: 17,688.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,241.25 : 30,698.39 = 12,815.28 : x
  2. Step 2: Convert to fraction form
    22,241.25/30,698.39 = 12,815.28/x
  3. Step 3: Cross multiply
    22,241.25x = 30,698.39 × 12,815.28
  4. Step 4: Simplify right side
    22,241.25x = 393,408,495.44
  5. Step 5: Solve for x
    x = 393,408,495.44/22,241.25
  6. Step 6: Final answer
    x = 17,688.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.